diff options
Diffstat (limited to 'drivers/media/platform/vsp1')
| -rw-r--r-- | drivers/media/platform/vsp1/vsp1_clu.c | 27 | ||||
| -rw-r--r-- | drivers/media/platform/vsp1/vsp1_clu.h | 1 | ||||
| -rw-r--r-- | drivers/media/platform/vsp1/vsp1_dl.c | 221 | ||||
| -rw-r--r-- | drivers/media/platform/vsp1/vsp1_dl.h | 3 | ||||
| -rw-r--r-- | drivers/media/platform/vsp1/vsp1_lut.c | 27 | ||||
| -rw-r--r-- | drivers/media/platform/vsp1/vsp1_lut.h | 1 |
6 files changed, 100 insertions, 180 deletions
diff --git a/drivers/media/platform/vsp1/vsp1_clu.c b/drivers/media/platform/vsp1/vsp1_clu.c index ebfbb91..8efa12f 100644 --- a/drivers/media/platform/vsp1/vsp1_clu.c +++ b/drivers/media/platform/vsp1/vsp1_clu.c @@ -19,6 +19,8 @@ #define CLU_MIN_SIZE 4U #define CLU_MAX_SIZE 8190U +#define CLU_SIZE (17 * 17 * 17) + /* ----------------------------------------------------------------------------- * Device Access */ @@ -43,19 +45,19 @@ static int clu_set_table(struct vsp1_clu *clu, struct v4l2_ctrl *ctrl) struct vsp1_dl_body *dlb; unsigned int i; - dlb = vsp1_dl_body_alloc(clu->entity.vsp1, 1 + 17 * 17 * 17); + dlb = vsp1_dl_body_get(clu->pool); if (!dlb) return -ENOMEM; vsp1_dl_body_write(dlb, VI6_CLU_ADDR, 0); - for (i = 0; i < 17 * 17 * 17; ++i) + for (i = 0; i < CLU_SIZE; ++i) vsp1_dl_body_write(dlb, VI6_CLU_DATA, ctrl->p_new.p_u32[i]); spin_lock_irq(&clu->lock); swap(clu->clu, dlb); spin_unlock_irq(&clu->lock); - vsp1_dl_body_free(dlb); + vsp1_dl_body_put(dlb); return 0; } @@ -216,8 +218,16 @@ static void clu_configure(struct vsp1_entity *entity, } } +static void clu_destroy(struct vsp1_entity *entity) +{ + struct vsp1_clu *clu = to_clu(&entity->subdev); + + vsp1_dl_body_pool_destroy(clu->pool); +} + static const struct vsp1_entity_operations clu_entity_ops = { .configure = clu_configure, + .destroy = clu_destroy, }; /* ----------------------------------------------------------------------------- @@ -243,6 +253,17 @@ struct vsp1_clu *vsp1_clu_create(struct vsp1_device *vsp1) if (ret < 0) return ERR_PTR(ret); + /* + * Pre-allocate a body pool, with 3 bodies allowing a userspace update + * before the hardware has committed a previous set of tables, handling + * both the queued and pending dl entries. One extra entry is added to + * the CLU_SIZE to allow for the VI6_CLU_ADDR header. + */ + clu->pool = vsp1_dl_body_pool_create(clu->entity.vsp1, 3, CLU_SIZE + 1, + 0); + if (!clu->pool) + return ERR_PTR(-ENOMEM); + /* Initialize the control handler. */ v4l2_ctrl_handler_init(&clu->ctrls, 2); v4l2_ctrl_new_custom(&clu->ctrls, &clu_table_control, NULL); diff --git a/drivers/media/platform/vsp1/vsp1_clu.h b/drivers/media/platform/vsp1/vsp1_clu.h index c45e6e7..cef2f44 100644 --- a/drivers/media/platform/vsp1/vsp1_clu.h +++ b/drivers/media/platform/vsp1/vsp1_clu.h @@ -32,6 +32,7 @@ struct vsp1_clu { spinlock_t lock; unsigned int mode; struct vsp1_dl_body *clu; + struct vsp1_dl_body_pool *pool; }; static inline struct vsp1_clu *to_clu(struct v4l2_subdev *subdev) diff --git a/drivers/media/platform/vsp1/vsp1_dl.c b/drivers/media/platform/vsp1/vsp1_dl.c index 41ace89..617c46a 100644 --- a/drivers/media/platform/vsp1/vsp1_dl.c +++ b/drivers/media/platform/vsp1/vsp1_dl.c @@ -108,7 +108,7 @@ struct vsp1_dl_list { struct vsp1_dl_header *header; dma_addr_t dma; - struct vsp1_dl_body body0; + struct vsp1_dl_body *body0; struct list_head bodies; bool has_chain; @@ -128,14 +128,12 @@ enum vsp1_dl_mode { * @mode: display list operation mode (header or headerless) * @singleshot: execute the display list in single-shot mode * @vsp1: the VSP1 device - * @lock: protects the free, active, queued, pending and gc_bodies lists + * @lock: protects the free, active, queued, and pending lists * @free: array of all free display lists * @active: list currently being processed (loaded) by hardware * @queued: list queued to the hardware (written to the DL registers) * @pending: list waiting to be queued to the hardware * @pool: body pool for the display list bodies - * @gc_work: bodies garbage collector work struct - * @gc_bodies: array of display list bodies waiting to be freed */ struct vsp1_dl_manager { unsigned int index; @@ -150,9 +148,6 @@ struct vsp1_dl_manager { struct vsp1_dl_list *pending; struct vsp1_dl_body_pool *pool; - - struct work_struct gc_work; - struct list_head gc_bodies; }; /* ----------------------------------------------------------------------------- @@ -290,89 +285,6 @@ void vsp1_dl_body_put(struct vsp1_dl_body *dlb) spin_unlock_irqrestore(&dlb->pool->lock, flags); } -/* - * Initialize a display list body object and allocate DMA memory for the body - * data. The display list body object is expected to have been initialized to - * 0 when allocated. - */ -static int vsp1_dl_body_init(struct vsp1_device *vsp1, - struct vsp1_dl_body *dlb, unsigned int num_entries, - size_t extra_size) -{ - size_t size = num_entries * sizeof(*dlb->entries) + extra_size; - - dlb->vsp1 = vsp1; - dlb->size = size; - dlb->max_entries = num_entries; - - dlb->entries = dma_alloc_wc(vsp1->bus_master, dlb->size, &dlb->dma, - GFP_KERNEL); - if (!dlb->entries) - return -ENOMEM; - - return 0; -} - -/* - * Cleanup a display list body and free allocated DMA memory allocated. - */ -static void vsp1_dl_body_cleanup(struct vsp1_dl_body *dlb) -{ - dma_free_wc(dlb->vsp1->bus_master, dlb->size, dlb->entries, dlb->dma); -} - -/** - * vsp1_dl_body_alloc - Allocate a display list body - * @vsp1: The VSP1 device - * @num_entries: The maximum number of entries that the body can contain - * - * Allocate a display list body with enough memory to contain the requested - * number of entries. - * - * Return a pointer to a body on success or NULL if memory can't be allocated. - */ -struct vsp1_dl_body *vsp1_dl_body_alloc(struct vsp1_device *vsp1, - unsigned int num_entries) -{ - struct vsp1_dl_body *dlb; - int ret; - - dlb = kzalloc(sizeof(*dlb), GFP_KERNEL); - if (!dlb) - return NULL; - - ret = vsp1_dl_body_init(vsp1, dlb, num_entries, 0); - if (ret < 0) { - kfree(dlb); - return NULL; - } - - return dlb; -} - -/** - * vsp1_dl_body_free - Free a display list body - * @dlb: The body - * - * Free the given display list body and the associated DMA memory. - * - * Bodies must only be freed explicitly if they are not added to a display - * list, as the display list will take ownership of them and free them - * otherwise. Manual free typically happens at cleanup time for bodies that - * have been allocated but not used. - * - * Passing a NULL pointer to this function is safe, in that case no operation - * will be performed. - */ -void vsp1_dl_body_free(struct vsp1_dl_body *dlb) -{ - if (!dlb) - return; - - vsp1_dl_body_cleanup(dlb); - kfree(dlb); -} - /** * vsp1_dl_body_write - Write a register to a display list body * @dlb: The body @@ -401,8 +313,6 @@ void vsp1_dl_body_write(struct vsp1_dl_body *dlb, u32 reg, u32 data) static struct vsp1_dl_list *vsp1_dl_list_alloc(struct vsp1_dl_manager *dlm) { struct vsp1_dl_list *dl; - size_t header_size; - int ret; dl = kzalloc(sizeof(*dl), GFP_KERNEL); if (!dl) @@ -411,41 +321,39 @@ static struct vsp1_dl_list *vsp1_dl_list_alloc(struct vsp1_dl_manager *dlm) INIT_LIST_HEAD(&dl->bodies); dl->dlm = dlm; - /* - * Initialize the display list body and allocate DMA memory for the body - * and the optional header. Both are allocated together to avoid memory - * fragmentation, with the header located right after the body in - * memory. - */ - header_size = dlm->mode == VSP1_DL_MODE_HEADER - ? ALIGN(sizeof(struct vsp1_dl_header), 8) - : 0; - - ret = vsp1_dl_body_init(dlm->vsp1, &dl->body0, VSP1_DL_NUM_ENTRIES, - header_size); - if (ret < 0) { - kfree(dl); + /* Get a default body for our list. */ + dl->body0 = vsp1_dl_body_get(dlm->pool); + if (!dl->body0) return NULL; - } - if (dlm->mode == VSP1_DL_MODE_HEADER) { - size_t header_offset = VSP1_DL_NUM_ENTRIES - * sizeof(*dl->body0.entries); + size_t header_offset = dl->body0->max_entries + * sizeof(*dl->body0->entries); - dl->header = ((void *)dl->body0.entries) + header_offset; - dl->dma = dl->body0.dma + header_offset; + dl->header = ((void *)dl->body0->entries) + header_offset; + dl->dma = dl->body0->dma + header_offset; memset(dl->header, 0, sizeof(*dl->header)); - dl->header->lists[0].addr = dl->body0.dma; + dl->header->lists[0].addr = dl->body0->dma; } return dl; } +static void vsp1_dl_list_bodies_put(struct vsp1_dl_list *dl) +{ + struct vsp1_dl_body *dlb, *tmp; + + list_for_each_entry_safe(dlb, tmp, &dl->bodies, list) { + list_del(&dlb->list); + vsp1_dl_body_put(dlb); + } +} + static void vsp1_dl_list_free(struct vsp1_dl_list *dl) { - vsp1_dl_body_cleanup(&dl->body0); - list_splice_init(&dl->bodies, &dl->dlm->gc_bodies); + vsp1_dl_body_put(dl->body0); + vsp1_dl_list_bodies_put(dl); + kfree(dl); } @@ -499,18 +407,13 @@ static void __vsp1_dl_list_put(struct vsp1_dl_list *dl) dl->has_chain = false; + vsp1_dl_list_bodies_put(dl); + /* - * We can't free bodies here as DMA memory can only be freed in - * interruptible context. Move all bodies to the display list manager's - * list of bodies to be freed, they will be garbage-collected by the - * work queue. + * body0 is reused as as an optimisation as presently every display list + * has at least one body, thus we reinitialise the entries list. */ - if (!list_empty(&dl->bodies)) { - list_splice_init(&dl->bodies, &dl->dlm->gc_bodies); - schedule_work(&dl->dlm->gc_work); - } - - dl->body0.num_entries = 0; + dl->body0->num_entries = 0; list_add_tail(&dl->list, &dl->dlm->free); } @@ -547,7 +450,7 @@ void vsp1_dl_list_put(struct vsp1_dl_list *dl) */ void vsp1_dl_list_write(struct vsp1_dl_list *dl, u32 reg, u32 data) { - vsp1_dl_body_write(&dl->body0, reg, data); + vsp1_dl_body_write(dl->body0, reg, data); } /** @@ -560,8 +463,8 @@ void vsp1_dl_list_write(struct vsp1_dl_list *dl, u32 reg, u32 data) * which bodies are added. * * Adding a body to a display list passes ownership of the body to the list. The - * caller must not touch the body after this call, and must not free it - * explicitly with vsp1_dl_body_free(). + * caller must not touch the body after this call, and must not release it + * explicitly with vsp1_dl_body_put(). * * Additional bodies are only usable for display lists in header mode. * Attempting to add a body to a header-less display list will return an error. @@ -619,7 +522,7 @@ static void vsp1_dl_list_fill_header(struct vsp1_dl_list *dl, bool is_last) * list was allocated. */ - hdr->num_bytes = dl->body0.num_entries + hdr->num_bytes = dl->body0->num_entries * sizeof(*dl->header->lists); list_for_each_entry(dlb, &dl->bodies, list) { @@ -693,9 +596,9 @@ static void vsp1_dl_list_hw_enqueue(struct vsp1_dl_list *dl) * bit will be cleared by the hardware when the display list * processing starts. */ - vsp1_write(vsp1, VI6_DL_HDR_ADDR(0), dl->body0.dma); + vsp1_write(vsp1, VI6_DL_HDR_ADDR(0), dl->body0->dma); vsp1_write(vsp1, VI6_DL_BODY_SIZE, VI6_DL_BODY_SIZE_UPD | - (dl->body0.num_entries * sizeof(*dl->header->lists))); + (dl->body0->num_entries * sizeof(*dl->header->lists))); } else { /* * In header mode, program the display list header address. If @@ -900,45 +803,12 @@ void vsp1_dlm_reset(struct vsp1_dl_manager *dlm) dlm->pending = NULL; } -/* - * Free all bodies awaiting to be garbage-collected. - * - * This function must be called without the display list manager lock held. - */ -static void vsp1_dlm_bodies_free(struct vsp1_dl_manager *dlm) -{ - unsigned long flags; - - spin_lock_irqsave(&dlm->lock, flags); - - while (!list_empty(&dlm->gc_bodies)) { - struct vsp1_dl_body *dlb; - - dlb = list_first_entry(&dlm->gc_bodies, struct vsp1_dl_body, - list); - list_del(&dlb->list); - - spin_unlock_irqrestore(&dlm->lock, flags); - vsp1_dl_body_free(dlb); - spin_lock_irqsave(&dlm->lock, flags); - } - - spin_unlock_irqrestore(&dlm->lock, flags); -} - -static void vsp1_dlm_garbage_collect(struct work_struct *work) -{ - struct vsp1_dl_manager *dlm = - container_of(work, struct vsp1_dl_manager, gc_work); - - vsp1_dlm_bodies_free(dlm); -} - struct vsp1_dl_manager *vsp1_dlm_create(struct vsp1_device *vsp1, unsigned int index, unsigned int prealloc) { struct vsp1_dl_manager *dlm; + size_t header_size; unsigned int i; dlm = devm_kzalloc(vsp1->dev, sizeof(*dlm), GFP_KERNEL); @@ -953,8 +823,21 @@ struct vsp1_dl_manager *vsp1_dlm_create(struct vsp1_device *vsp1, spin_lock_init(&dlm->lock); INIT_LIST_HEAD(&dlm->free); - INIT_LIST_HEAD(&dlm->gc_bodies); - INIT_WORK(&dlm->gc_work, vsp1_dlm_garbage_collect); + + /* + * Initialize the display list body and allocate DMA memory for the body + * and the optional header. Both are allocated together to avoid memory + * fragmentation, with the header located right after the body in + * memory. + */ + header_size = dlm->mode == VSP1_DL_MODE_HEADER + ? ALIGN(sizeof(struct vsp1_dl_header), 8) + : 0; + + dlm->pool = vsp1_dl_body_pool_create(vsp1, prealloc, + VSP1_DL_NUM_ENTRIES, header_size); + if (!dlm->pool) + return NULL; for (i = 0; i < prealloc; ++i) { struct vsp1_dl_list *dl; @@ -976,12 +859,10 @@ void vsp1_dlm_destroy(struct vsp1_dl_manager *dlm) if (!dlm) return; - cancel_work_sync(&dlm->gc_work); - list_for_each_entry_safe(dl, next, &dlm->free, list) { list_del(&dl->list); vsp1_dl_list_free(dl); } - vsp1_dlm_bodies_free(dlm); + vsp1_dl_body_pool_destroy(dlm->pool); } diff --git a/drivers/media/platform/vsp1/vsp1_dl.h b/drivers/media/platform/vsp1/vsp1_dl.h index 107eebc..6a7d48e 100644 --- a/drivers/media/platform/vsp1/vsp1_dl.h +++ b/drivers/media/platform/vsp1/vsp1_dl.h @@ -41,9 +41,6 @@ void vsp1_dl_body_pool_destroy(struct vsp1_dl_body_pool *pool); struct vsp1_dl_body *vsp1_dl_body_get(struct vsp1_dl_body_pool *pool); void vsp1_dl_body_put(struct vsp1_dl_body *dlb); -struct vsp1_dl_body *vsp1_dl_body_alloc(struct vsp1_device *vsp1, - unsigned int num_entries); -void vsp1_dl_body_free(struct vsp1_dl_body *dlb); void vsp1_dl_body_write(struct vsp1_dl_body *dlb, u32 reg, u32 data); int vsp1_dl_list_add_body(struct vsp1_dl_list *dl, struct vsp1_dl_body *dlb); int vsp1_dl_list_add_chain(struct vsp1_dl_list *head, struct vsp1_dl_list *dl); diff --git a/drivers/media/platform/vsp1/vsp1_lut.c b/drivers/media/platform/vsp1/vsp1_lut.c index acbaca0..6b35861 100644 --- a/drivers/media/platform/vsp1/vsp1_lut.c +++ b/drivers/media/platform/vsp1/vsp1_lut.c @@ -19,6 +19,8 @@ #define LUT_MIN_SIZE 4U #define LUT_MAX_SIZE 8190U +#define LUT_SIZE 256 + /* ----------------------------------------------------------------------------- * Device Access */ @@ -40,11 +42,11 @@ static int lut_set_table(struct vsp1_lut *lut, struct v4l2_ctrl *ctrl) struct vsp1_dl_body *dlb; unsigned int i; - dlb = vsp1_dl_body_alloc(lut->entity.vsp1, 256); + dlb = vsp1_dl_body_get(lut->pool); if (!dlb) return -ENOMEM; - for (i = 0; i < 256; ++i) + for (i = 0; i < LUT_SIZE; ++i) vsp1_dl_body_write(dlb, VI6_LUT_TABLE + 4 * i, ctrl->p_new.p_u32[i]); @@ -52,7 +54,7 @@ static int lut_set_table(struct vsp1_lut *lut, struct v4l2_ctrl *ctrl) swap(lut->lut, dlb); spin_unlock_irq(&lut->lock); - vsp1_dl_body_free(dlb); + vsp1_dl_body_put(dlb); return 0; } @@ -83,7 +85,7 @@ static const struct v4l2_ctrl_config lut_table_control = { .max = 0x00ffffff, .step = 1, .def = 0, - .dims = { 256}, + .dims = { LUT_SIZE }, }; /* ----------------------------------------------------------------------------- @@ -172,8 +174,16 @@ static void lut_configure(struct vsp1_entity *entity, } } +static void lut_destroy(struct vsp1_entity *entity) +{ + struct vsp1_lut *lut = to_lut(&entity->subdev); + + vsp1_dl_body_pool_destroy(lut->pool); +} + static const struct vsp1_entity_operations lut_entity_ops = { .configure = lut_configure, + .destroy = lut_destroy, }; /* ----------------------------------------------------------------------------- @@ -199,6 +209,15 @@ struct vsp1_lut *vsp1_lut_create(struct vsp1_device *vsp1) if (ret < 0) return ERR_PTR(ret); + /* + * Pre-allocate a body pool, with 3 bodies allowing a userspace update + * before the hardware has committed a previous set of tables, handling + * both the queued and pending dl entries. + */ + lut->pool = vsp1_dl_body_pool_create(vsp1, 3, LUT_SIZE, 0); + if (!lut->pool) + return ERR_PTR(-ENOMEM); + /* Initialize the control handler. */ v4l2_ctrl_handler_init(&lut->ctrls, 1); v4l2_ctrl_new_custom(&lut->ctrls, &lut_table_control, NULL); diff --git a/drivers/media/platform/vsp1/vsp1_lut.h b/drivers/media/platform/vsp1/vsp1_lut.h index dce2fdc..8cb0df1b 100644 --- a/drivers/media/platform/vsp1/vsp1_lut.h +++ b/drivers/media/platform/vsp1/vsp1_lut.h @@ -29,6 +29,7 @@ struct vsp1_lut { spinlock_t lock; struct vsp1_dl_body *lut; + struct vsp1_dl_body_pool *pool; }; static inline struct vsp1_lut *to_lut(struct v4l2_subdev *subdev) |
